Extension table



Jail 16, 1940.

v. c. LUPPERT EXTENSION TABLE Filed Apr-119, 1938 2 sheets-sheet 1 mwizvron peri 2 Sheets-Sheet 2 I E mm kw. v M x WW mxmwm w w l m Qw kfiwfi M 1 v v d h H w n. Q 9% Jan. 16, 1940. v c. LUPPERT EXTENSION TABLE Filed April 9, 1938 Patented Jan. 16, 1940 EXTENSION TABLE Valentine C. Luppert, williamsport, Pa. Application April 9, 1938; Serial No.'201,17

1 Claim.

This invention relates to improvements in extension tables of the refectory type.

' The primary'purpose of the present invention is toprovide improved means for supporting'thel; extension leaf or leaves of such tables including adjustment means for leveling the leaf or leaves. Another object is to furnish an extension table of simple, inexpensive and sturdy construction,

in which the extension leaf supporting means will function efiecti-vely without liability of getting out of order.

Another object is to supply an extension table oi the refectory type having simple means to eliminate any possible chance of the lid or leaf moving out of place until a bolt is released.

A still'further object is to provide improved hardware readily applicable to known types of refectory tables to improve the -manipulation, support and leveling of the extension leaves.

other objects in view which will appear as the description proceeds, the invention consists in the novel features hereinafter described in detail,

illustrated 'in the accompanying drawings, and

more particularly pointed out in the appended claim.

Inthe drawings:

Fig. 1 is a bottom plan viewof the top of a refectory type extension table provided with one form of my improvements and showing the movable leaves in extended position.

Fig. 2 is a similar view with the extension leaves contracted. I

Figs. 3 and 4 are vertical sectional views taken respectively on the lines 3-3 and 4-4 of Figs. 1 and 2.

Fig. 5 is a side elevation of a corner of a l refectory table in accordance with my invention.

Fig. 6 is a part sectional and part elevational view of adetail of a modification of the invention, Fig. 7 is an enlarged view of a detail of the structure shown in Fig. 3.

- 8 is a view similar to Fig. 7 of the hook commcdate pairs I3 and M of inwardly and outi warclly movable rails. Each pair of rails supports an extension leaf 15. The rails may be made of any suitable material, and for the sake With the foregoing objects outlined and with of disclosure, I have shown each rail as made of an angle iron strip havinga horizontal wing it? (Fig. 7) from which depends a vertical wingv ll. The outer end portion of each rail issecured to one of the extension leaves by any suitable means '5 such as screws I8 (Fig. 1) and the inner end portion of each rail is arranged at a lower elevation than the outer end portion and connected to'the latter by a cam portion l9. The cam portions cooperate with the end bars ll of the table to 10:

raise the leaves I5 into a plane parallel with the plane of the stationary top 8, when the leaves are pulled outwardly, and to lower the leaves when the latter are moved inwardly toward one another. 1

The rails are not only guided by the end bars H but also by a stationary cross bar of the table top, which has guide slots 2| toaccommodate the inner end portions of the rails.

Each end bar is provided on its inner side with a pair of stationary brackets 22 each havinga horizontal cross pin 23. The pins cooperate with supporting hooks 24, each of which has a threaded shank 25 extending through a horizontal wing it of a rail, and adjustably secured to 25 the latter by a pair of nuts 26 and 21, arranged respectively above and below'such wing. It will be obvious that this construction permits any one of the hooks to be adjusted vertically for the purpose of leveling the extension leaf with which 30 it is operatively connected, and of course, after adjustment, thenuts 26 and 2'! may be employed to fixedly lock the hook in position.

Instead of connecting the hooks 24 to the rails,

it is obvious that pins- 23 might be connected to the rails, and the hooks attached either to the stationary table top 8a (Fig. 6) or to the end bars Ii. By way of explanation, it is'obvious that brackets 22 might be secured to suitable portions of extension elements of the table and each hook 40 24a could be adjustably secured to a fixed bracket 28. r

If wood rails or stretchers l3a (Fig. 8) are used instead of metal rails, each hook 2427 may have a threaded shank 240 that is screwed into the bottom of the rail and locked in position by a nut 24d.

I prefer to provide the shanks of the hooks in all cases with sixteen threads to the inch as this will enable the operator to make fine adjustments. Y

In order to prevent the leaves from accidentally moving upwardly while they are extended, any suitable latching means is provided- For example, each extension leaf may be provided with a latching member 29 having a springprojected bolt 30. Each bolt, as shown in Figs. 1 and 2, has a finger hole 3 I, and of course, when the bolt is released the leaf can be manipulated so as to permit the hooks 24 to be disconnected from the pins 23, and then the leaves may be lowered and pushed inwardly to return them to the position shown in Figs. 2 and 4.

Stationary cross strips 32 to prevent warping of the top are arranged at the bottom of the stationary top 8 between the cross bar 20 and the end bars I I.

In operation, assuming that the parts are in the position shown in Figs. 2 and 4, it will be obvious that if the leaves I5 are pulled outwardly and then lifted, the books 24 may be placed in engagement with the pins 23, and then when the leaves are lowered into alignment with the stationary top 8, the ends of the hooks will come to rest on the pins to prevent further downward movement of the leaves. Then the bolts 30 are projected so as to prevent further accidental upward movement of such leaves.

In order to return the leaves l5 to stored position beneath the top 8, the bolts 30 are first released, and then the leaves are manipulated to disengage the hooks 24 from the pins 23, after which the leaves may be slid inwardly while guided by the rails 13, I4.

While I have disclosed what I now consider to be preferred embodiments of the invention, in such manner that the same may be readily understood, I am aware that changes may be made in the specific details disclosed, without departing from the spirit of the invention as expressed in the claim.

What I claim and desire to secure by Letters Patent is:

An extension table comprising a stationary top,

an extension leaf, a pair of angle iron rail members slidably supported by the stationary top and supporting the extension leaf, each rail having parallel end portions and a medial cam portion, said cam portion being adapted to cooperate with a portion of the stationary top for elevating the extension leaf into the plane of the upper surface of said top when the leaf is pulled outwardly in a direction'away from the stationary top, hooks having threaded shanks adjustably connected to the rails inwardly of the cam portions of the latter, cross pins secured to the stationary top and engageable by the hooks for holding the extension leaf in raised position, and a rigid bolt slidably connected to the bottom of the extension leaf and adapted to be projected under a portion of the table top to prevent the leaf from being moved upwardly after the hooks have been brought into engagement with said pins.

VALENTINE C. LUPPERT. 301 

